Nissan Altima HL32 Hybrid. Manual - part 549

P0A85-123

HBB-53

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3.

CHECK HARNESS AND CONNECTOR (VOLTAGE)

CAUTION:

Be sure to wear insulated gloves.

1. Turn ignition switch OFF.

2. Remove the service plug grip (Refer to 

GI-24, "Precautions For High-Voltage System"

).

3. Remove the battery smart unit (Refer to 

HBB-101, "Removal and Installation"

).

NOTE:

Do not disconnect the battery smart unit connectors.

4. Turn ignition switch ON.

5. Select “COOLING FAN SPD” in “ACTIVE TEST” mode with CONSULT-III.

NOTE:

Before performing “ACTIVE TEST”, check “COOLING FAN 1” indication in “DATA MONITOR” mode. If

“COOLING FAN 1” indicates 1 to 6, it is not necessary to perform the “ACTIVE TEST”.

6. Select each air volume mode (1 to 6) in “COOLING FAN SPD” to operate the battery cooling blower

assembly.

7. Measure the voltage according to the value(s) in the table below

while the cooling fan is operating.

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 4.

4.

CHECK HARNESS AND CONNECTOR (BATTERY COOLING BLOWER - BATTERY SMART UNIT)

CAUTION:

Be sure to wear insulated gloves.

1. Turn ignition switch OFF.

2. Disconnect battery smart unit harness connector B130.

3. Measure the resistance according to the value(s) in the table below.

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace harness or connector.

5.

CHECK BATTERY SMART UNIT (VOLTAGE)

CAUTION:

Be sure to wear insulated gloves.

1. Turn ignition switch ON.

Battery smart unit (A)

Ground

Voltage

Connector

Terminal

B130

9 (VM)

Ground

Below 5 V

JMCIA0253ZZ

Battery cooling blower assembly

Ground

Resistance

Connector

Terminal

B128

2 (VMO)

Other terminal

10 k

Ω or higher

Battery smart unit

Ground

Resistance

Connector

Terminal

B130

9 (VM)

Other terminal

10 k

Ω or higher

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P0A85-123

2. Measure the voltage according to the value(s) in the table below.

OK or NG

OK

>> Replace battery cooling blower assembly (Refer to

HBB-106, "Removal and Installation"

).

NG

>> Replace battery smart unit (Refer to 

HBB-101,

"Removal and Installation"

).

6.

CHECK HV BATTERY (BATTERY TEMPERATURE SENSOR AND INTAKE AIR TEMPERATURE SEN-

SOR)

CAUTION:

Be sure to wear insulated gloves.

1. Turn ignition switch OFF.

2. Disconnect the battery smart unit harness connectors.

3. Measure the resistance according to the value(s) in the table

below.

OK or NG

OK

>> Replace battery smart unit (Refer to 

HBB-101, "Removal and Installation"

).

NG

>> Replace HV battery (Refer to 

HBB-97, "Removal and Installation"

).

Battery smart unit

Battery smart unit

Voltage

Connector

Terminal

Connector

Terminal

B130

9 (VM)

B130

10 (GND)

Below 5 V

JMCIA0254ZZ

Battery smart unit

Battery smart unit

Resistance

Connector

Terminal

Connector

Terminal

—

TB0

B130

1 (IGCT [ 

LH6])

10 k

Ω or higher

GB0

TB1

GB1

TB2

GB2

TB3

GB3

TC0

GC0

JMCIA0113GB

P0A95-123

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P0A95-123

Description

INFOID:0000000004212267

The main fuse for high-voltage circuit is provided inside of the service plug grip.

DTC Logic

INFOID:0000000004212268

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000004212269

1.

PRECONDITIONING

• Before inspecting the high-voltage system, take safety precautions such as wearing insulated gloves and

removing the service plug grip to prevent electrical shocks. After removing the service plug grip, put it in your

pocket to prevent other technicians from accidentally reconnecting it while you are working on the high-volt-

age system.

• After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage

connectors or terminals.

• Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with

converter assembly.

>> GO TO 2.

2.

CHECK FOR DTC (DTC P0A1F-123 IS OUTPUT)

1. Turn ignition switch ON.

2. Check DTC.
Is DTC P0A1F-123 detected?

YES

>> Go to Diagnosis Procedure relevant to output DTC.

NO

>> GO TO 3.

3.

CHECK FOR DTC (DTCS OTHER THAN P0A95-123)

1. Turn ignition switch ON.

2. Check DTC.
Are DTCs other than P0A95-123 detected?

YES

>> Go to Diagnosis Procedure relevant to output DTC.

NO

>> GO TO 4.

JMCIA0109GB

DTC No.

INF code

Trouble diagnosis name

DTC detecting condition

Possible cause

P0A95

123

High voltage fuse

Voltage between VB7 and VB8 terminals is below the 
standard despite the interlock switch being engaged 
(1 trip detection)

• Service plug grip
• HV  battery
• Battery smart unit

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P0A95-123

4.

INSPECT SERVICE PLUG GRIP

CAUTION:

Be sure to wear insulated gloves.

1. Turn ignition switch OFF.

2. Remove the service plug grip (Refer to 

GI-24, "Precautions For High-Voltage System"

).

NOTE:

After removing the service plug grip, do not turn ignition switch ON (READY), unless instructed by the ser-

vice manual because this may cause a malfunction.

3. Measure the resistance between the terminals of the service plug grip.

OK or NG

OK

>> Replace HV battery (Refer to 

HBB-97, "Removal and Installation"

).

NG

>> Replace service plug grip (Refer to 

GI-24, "Precautions For High-Voltage System"

).

Standard resistance: Below 1

Ω